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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2972bc5a6da65557cbc7a4bd83c9bdb2ceae3cd51ef0b63e5d48826dc122a95b' 
  AND token = 'EOqzatcY7LwytnlUCzF0qBnnIbwwmptXuH4bAIGuKu8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}